/*
 *  common.h -- header functions used by mpq-tools.
 *
 *  Copyright (c) 2003-2008 Maik Broemme <mbroemme@plusserver.de>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef _COMMON_H
#define _COMMON_H

/* function to return the hash to a given string. */
uint32_t libmpq__hash_string(
    const char  *key,
    uint32_t    offset
);

/* function to encrypt a block. */
int32_t libmpq__encrypt_block(
    uint32_t    *in_buf,
    uint32_t    in_size,
    uint32_t    seed
);

/* function to decrypt a block. */
int32_t libmpq__decrypt_block(
    uint32_t    *in_buf,
    uint32_t    in_size,
    uint32_t    seed
);

/* function to detect decryption key. */
int32_t libmpq__decrypt_key(
    uint8_t     *in_buf,
    uint32_t    in_size,
    uint32_t    block_size
);

/* function to decompress or explode block from archive. */
int32_t libmpq__decompress_block(
    uint8_t     *in_buf,
    uint32_t    in_size,
    uint8_t     *out_buf,
    uint32_t    out_size,
    uint32_t    compression_type
);

#endif                      /* _COMMON_H */
